No one can be very certain I mean there is no guarantee as to what Bitcoin will become in the future, historically Bitcoin has made a wide spread adoption with a tremendous increase in value, but past  event is not a guarantee of the the future event rather it can only be a guide yet we need to consider having certain believe towards possibilities, if Bitcoin becomes regulated and controlled by the government it has changed it purpose of being decentralized which I think it will not be possible considering the anonymity of Satoshi